AllowOps is used to check whether the PodOpsLifecycle phase is in UPGRADE to do following operations.

Begin is used for an CRD Operator to begin a lifecycle.

Finish is used for an CRD Operator to finish a lifecycle.

IsDuringOps decides whether the Pod is during ops or not DuringOps means the Pod's OpsLifecycle phase is in or after PreCheck phase and before Finish phase.

LifecycleAdapter helps CRD Operators to easily access PodOpsLifecycle.